The event, held at the Skirball Cultural Center, was produced and written by Marc Cherry and David Rambo and hosted by actress Marilu Henner.
In addition to his Tony-winning role in Mark Twain Tonight!, Holbrook's other Broadway credits include An American Daughter; Does a Tiger Wear a Necktie?; I Never Sang for My Father; The Apple Tree; Man of La Mancha; The Glass Menagerie; Tartuffe; Incident at Vichy; Marco Millions; After the Fall; and Do You Know the Milky Way?. Holbrook is also a five-time Emmy Award winner and an Academy Award nominee for "Into the Wild."
Here's a look at the party: